Question

To get to the 1st, 3rd 5th, or 7th floors, you use elevator bank a. To get to the 2nd , 4th , 6th or 8th floors , you use elevator Bank b . If Gwen uses elevator bank b to reach her office which floor is she on ?
A.23rd floor
B.24th floor
C.41st floor
D.35th floor

Answer 1

Option B

Gwen is in 24th floor

Solution:

Given that to get the 1st, 3rd 5th, or 7th floors, you use elevator bank a

To get to the 2nd , 4th , 6th or 8th floors , you use elevator Bank b

From this we see that,

To reach odd numbered floors, we use elevator Bank a

To reach even numbered floors, we use elevator Bank b

If Gwen uses elevator bank b to reach her office which floor is she on ?

So if she uses elevator bank b, she must reach even numbered floor

From given options, 23rd floor, 41st floor and 35th floor are odd numbered floor

But option B 24th floor is a even number

So she will reach 24 th floor